[Haskell-beginners] Quickcheck Preconditions

[Guy]

Thanks, mod is a neat trick for applying the size. Is there a simple way of specifying bounds for quickcheck, or would I have to write a custom generator to do that?


>________________________________
>From: Jonas Almström Duregård <jonas.duregard at chalmers.se>
>Sent: Wednesday, 25 May 2011, 14:09
>Subject: Re: [Haskell-beginners] Quickcheck Preconditions
>
>
>You can write your own generators and use the forall function. Or for these simple examples you can just test on wrappers:
>
>
>testFoo :: (a,a,a,[a]) -> IO Bool
>testFoo (a1,a2,a3,as) = foo (a1:a2:a3:as)
>
>
>testBar :: (a,[a]) -> Int -> IO ()
>testBar (x,xs) n = bar xs' (n `mod` length xs') where xs' = x:xs 
>
>
>/J